P.A. Kondratovich1, Yu.E. Korchagin2, A.V. Tuchin3, K.D. Titov4

1–4 Voronezh State University (Voronezh, Russia)
1 pkondr@mail.ru, kondratovich.pa@gmail.com, 2 korchagin@phys.vsu.ru, 3 24in@mail.ru, 4 titovkd@bk.ru

At present, reference voltage sources (ION) are still a typical unit for building most digital and analog systems. It is necessary to create a new reference voltage source capable of operating over a wide range of voltages.

Purpose – develop a calibrated low noise reference voltage source.

A new reference voltage source is presented with the possibility of correcting the reference voltage nominal and the current-frequency coefficient, capable of operating in a wide range of supply voltages from 2.5 to 5.5 V and a voltage current of less than 100 μA, having a low flicker noise level, with root-mean-square deviation of less than 4 μV in the 0.01-25 Hz band. After trimming, the ION has a temperature coefficient of less than 5 ppm/m111 in the temperature diapa zone from − 60-150 ° C. The reference voltage is 1.25 V, with the ability to adjust with a step of 2-3 mV in the range of 1.24-1.26 V. This ION is made using CMOS technology 180 nm.

Based on the results obtained, it was found that in some applications, such as analog-to-digital (ADC) and digital-to-analog (DAC) converters, the accuracy and noise characteristics of the ION have a significant impact on the performance of the entire system.

Kondratovich P.A., Korchagin Yu.E., Tuchin A.V., Titov K.D. Low-Noise Bandgap Voltage Reference. Nanotechnology: development and applications – XXI century. 2025. V. 17. № 1. P. 35–44. DOI: https://doi.org/10.18127/ j22250980-202501-04 (in Russian)

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